Owners of the Redmi series’ low-end but robust devices often experience a slowdown after months of active use, a phenomenon that is directly related to the accumulation of temporary files that are necessary for fast application loading but eventually become critically large, and if your Redmi 7 is slower and space-short notifications are more frequent, it’s time to start servicing the drive.
The cleaning procedure does not require root rights or complex technical knowledge, but it is important to understand the difference between application data and their temporary files. Wrong actions can lead to loss of saved passwords in the browser or resetting settings in games, so the approach should be conscious. In this article, we will discuss in detail all secure methods of freeing up space on your device.
The MIUI operating system installed on Xiaomi Redmi 7 has built-in security mechanisms, but they are not always effective against “heavy” applications like social networks or instant messengers. Regular maintenance of the gadget will prolong its life and ensure stable operation of the interface. Below are proven algorithms of actions that will help to return the smartphone to its former agileness.
Why you should delete the cache on Xiaomi Redmi 7
Cache is a buffer memory that stores temporary data: image thumbnails, web page scripts, intermediate update files, and their main purpose is to speed up applications and reduce the load on the processor when programs are restarted. However, over time, these files can grow to several gigabytes, which is especially critical for the Redmi 7 model with its limited internal storage.
When the volume of temporary files becomes too large, the system starts to work slower, as it takes longer to index and search for the necessary data among the “junk”. In addition, corrupted cache files often cause crashes when the application simply stops opening or crashes immediately after launch.
It is worth noting that a full cache reset does not delete your personal correspondence, contacts or saved game progresses unless they are stored in local temporary files of the application itself. This is a secure maintenance procedure that is recommended to be carried out regularly, especially for users who are actively using the browser and installing a lot of new programs.
⚠️ Before doing a deep cleaning, make sure you know the passwords from important accounts, as in some browsers, cleaning the cache may require re-authorization on sites.
Understanding the way temporary files work helps avoid panic when they're used. In fact, cache is normal, but it's bad for you to have too much. For a smartphone with 32 or 64 GB of memory, every gigabyte released matters. Regular monitoring of memory status is key to your gadget's long life.
Cleaning the cache through the standard Security app
The easiest and safest way to remove accumulated debris on the Xiaomi Redmi 7 is to use the built-in system tool. Xiaomi preinstalles the Security app, which automatically scans the device for temporary files. This method is ideal for users who do not want to go into technical settings and are looking for a quick solution.
To get started, you need to find an icon on your desktop or in the Tools folder called Security (often green) and the system will automatically scan the application automatically after you start. If you want to start the process manually, click on the Cleanup button in the utility's main menu.
☑️ Quick cleaning algorithm
Once the analysis is complete, the system will show the amount of files that can be safely deleted, usually advertising cache, remnants of deleted applications and temporary system files. Pressing the cleanup button will take only a few seconds. It is important to understand that this method only removes surface debris, but not affecting it!
In some versions of the MIUI shell, the functionality is expanded: after the main cleaning, the system may suggest removing the "big file cache" or "app cache." Be careful when choosing these options, as they can take up a significant amount of space. The standard tool is good for preventive cleaning, but for deep analysis, it is better to use other methods described below.
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Use the cleaning widget on your desktop for quick access to the garbage removal feature without running the full app.
Manual deletion of cache of individual applications
The largest amount of temporary data is typically generated by social networks, instant messengers and video platforms. Apps like Telegram, YouTube or Instagram can accumulate gigabytes of cache, saving the photos and videos viewed for quick re-upload, deleting this data manually allows you to point-free space without affecting the entire system.
To do this, go to Settings → Apps → All Apps. In the list that opens, find the program you want, such as the Chrome browser or social network. Inside the app menu, select Storage. Here you will see two main buttons: Clear (or Reset) and Clear Cache.
Clicking Clear Cache will only securely delete temporary files. If you choose Clear All or Reset, the app will return to state immediately after installation, and you will lose logins, settings, and local data. So always read the button signatures in the storage management menu carefully.
| Annex | Type of data in the cache | Is it safe to remove | Impact on work |
|---|---|---|---|
| Google Chrome | Website pictures, scripts | Yes. | Websites will be loaded a little longer |
| YouTube | Miniatures, video buffer | Yes. | No negative impact |
| Telegram | Photos, videos, files | Yes (via settings) | The media will have to be downloaded again. |
| Tape, story, cache | Yes. | Re-entry possible |
In Telegram, for example, it is better to use the built-in cache cleaning function inside the application itself (Settings → Data and Memory → Memory Use), which allows you to flexibly configure automatic deletion of old files, which is more convenient than manual cleaning through Android settings.
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Manually cleaning the cache of heavy applications frees up more space than a standard system utility.
Using Developer Mode to Clean Dalton Cache
For more advanced Redmi 7 users, there is the option of clearing the Dalvik compiler cache (or ART) – a system cache that contains optimized application code for quick launch. its cleaning can help if the phone is unstable after a system update or strange artifacts are observed in the interface.
To access this feature, you must first activate the developer mode. Go to Settings → About Phone and quickly click 7 times on the MIUI Version. After the message “You became a developer” appears, go back to the main settings menu, go to Additional → For developers.
In the developer menu, scroll down to the Apps section, and there you will find Delete DALVIK cache (or Wipe Dalvik Cache). Pressing this button will require confirmation and reboot of the device. The process can take several minutes, during which the screen may go out, which is the normal system response to reassembling the app cache.
⚠️ Note: Do not use this feature unnecessarily, as after cleaning the Dalvik cache, the first application launch will occur noticeably slower than usual until the system recompiles them again.
This method is not designed for daily use and will not free up much disk space, as the cache will recover quickly. However, it is a powerful tool for troubleshooting when software crashes. If your Redmi 7 behaves unpredictable after a firmware update, this step can be a lifesaver.
What is Ahead-of-Time (AOT) compilation?
Cleaning DNS cache to solve network problems
Sometimes the problems with page loading speeds or connecting to certain servers are not related to memory capacity, but to outdated entries in the DNS cache. Xiaomi Redmi 7, like any Android smartphone, saves the addresses of visited sites to speed up the connection. If the site changed the server and the phone remembers the old address, connection errors can occur.
You don't have to be a programmer to clean the DNS cache, just open the Phone app and type in a special engineering code, type ##4636## on the dial, and that will open a hidden test menu, and if the code doesn't work (depending on the MIUI version and operator version), you can use the developer menu.
In the developer menu, find the Network or Network Settings section, and there may be the option “Reset Network Settings” or “Flush DNS.” An alternative and more versatile way is to turn on and off Aviation Mode, which will force the communication module to reconnect and update network settings.
- 📶 Open the Quick Settings menu with a curtain.
- ✈️ Activate Flight Mode for 10 seconds.
- 🔄 Turn off flight mode and wait until it appears. 4G/LTE.
These actions help to reset temporary network errors. If Internet problems persist, it is recommended in the Wi-Fi settings to forget the network and reconnect by entering a password, this is guaranteed to clear the connection cache for a particular access point.
Third-party utilities for deep cleaning
If there are not enough built-in tools, you can use third-party software, but be extremely careful: many “cleaners” are themselves a source of advertising and intrusive notifications. For Redmi 7 with its not the most powerful processor, heavy antivirus applications can do more harm than good, slowing down the system.
It is recommended to use proven open source solutions or from well-known vendors such as Files by Google.This application is lightweight, does not contain advertising and effectively finds duplicate files, screenshots and temporary data of messengers. It integrates into the system and offers secure cleanup scenarios.
Avoid installing applications that promise to “accelerate RAM” or “cool the processor” by clearing the cache. Android is designed so that free RAM is not the goal of the system; it manages resources efficiently. Aggressive cleaning of RAM by third-party utilities only causes the processor to reopen applications, consuming the battery.
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The best third-party utility is Files by Google, which does not require permanent permissions and runs in the background without loading the system.
When using any third-party tools, carefully monitor the permissions requested. If a simple cleaner requires access to your contacts, SMS or location, this is an alarm bell, in such cases it is better to limit yourself to standard MIUI tools, which have all the necessary default rights.